<template>
  <div class="wrapper" ref="wrapper">
    <div class="content">
      <slot></slot>
    </div>
  </div>
</template>

<script>

import BScroll from "better-scroll";

export default {
  name: "Scroll",
  props: {
    probeType: {
      type: Number,
      default: 0
    },
    pullUpLoad: {
      type: Boolean,
      default: false
    }

  },
  data() {
    return {
      scroll: null
    }
  },
  mounted() {

    //1.创建BScroll对象
    this.scroll = new BScroll(this.$refs.wrapper, {
      observeDOM: true,
      click: true,
      probeType: this.probeType,
      // pullUpLoad: this.pullUpLoad,
      pullUpLoad: true,
    });

    //2.监听滚动区域
    this.scroll.on('scroll', (position) => {
      // console.log(position);
      this.$emit('scroll', position)
    });

    //  3.监听上拉事件
    this.scroll.on('pullingUp', () => {
      this.$emit('pullingUp')
    })

  },


  methods: {
    //返回顶部
    scrollTo(x, y, time = 300) {
      this.scroll && this.scroll.scrollTo(x, y, time)
    },
    finishPullUp() {
      this.scroll.finishPullUp()
    },
    refresh() {
      this.scroll && this.scroll.refresh()
    },
    getScrollY() {
      return this.scroll ? this.scroll.y : 0
    }

  }

}
</script>

